Home / 55,371.20-83,056.80-20,306.30

Finding the Fourth Proportional to 55,371.20, 83,056.80 and 20,306.30

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Solution

The fourth proportional to 55,371.20, 83,056.80 and 20,306.30 is: 30,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,371.20 : 83,056.80 = 20,306.30 : x
  2. Step 2: Convert to fraction form
    55,371.20/83,056.80 = 20,306.30/x
  3. Step 3: Cross multiply
    55,371.20x = 83,056.80 × 20,306.30
  4. Step 4: Simplify right side
    55,371.20x = 1,686,576,297.84
  5. Step 5: Solve for x
    x = 1,686,576,297.84/55,371.20
  6. Step 6: Final answer
    x = 30,459.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.